Valve For Hand-Pump

To construct, glue one end of the 1 1/2" X 2" Nipple into one
of the Adapters. Insert Ball, then glue other Adapter on other
end of the Nipple. Place a small piece of wood into the open end
of the Valve and press Rubber Ball down to one end of the Valve,
so the ball isn't damaged while drilling. Drill a 1/4" Hole all
the way through the Valve, just below where the taper on the Adapter
ends, on the opposite end from where the Rubber Ball is. Remove
the wood and place the Pin through the hole. Secure pin as you
would a Rivet on both sides. Glue the 3/4" X 2" Nipple into the
same end where the ball is located. Glue the Valve assembly onto
the 3/4" PVC pipe that extends toward the surface.

Should take all of about 5 minutes to construct and shouldn't
cost more than a couple bucks.